Home / 13,221.44-19,834.72-7,072.32

Finding the Fourth Proportional to 13,221.44, 19,834.72 and 7,072.32

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Solution

The fourth proportional to 13,221.44, 19,834.72 and 7,072.32 is: 10,609.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.44 : 19,834.72 = 7,072.32 : x
  2. Step 2: Convert to fraction form
    13,221.44/19,834.72 = 7,072.32/x
  3. Step 3: Cross multiply
    13,221.44x = 19,834.72 × 7,072.32
  4. Step 4: Simplify right side
    13,221.44x = 140,277,486.95
  5. Step 5: Solve for x
    x = 140,277,486.95/13,221.44
  6. Step 6: Final answer
    x = 10,609.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.